Dick Clark: Celebrities react to his death on Twitter

@RyanSeacrest I am deeply saddened by the loss of my dear friend Dick Clark. He has truly been one of the greatest influences in my life. @RyanSeacrest My thoughts and prayers are with his family.

@RyanSeacrest I am deeply saddened by the loss of my dear friend Dick Clark. He has truly been one of the greatest influences in my life. @RyanSeacrest My thoughts and prayers are with his family. (Ida Mae Astute / ABC)